body {
    background-color: #f0f4f8;
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
}
.container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 800px;
    margin: 40px auto;
    text-align: center;
}
h1 {
    color: #343a40;
    font-size: 36px;
    margin-bottom: 20px;
}
.article-info {
    color: #6c757d;
    font-size: 18px;
    margin-bottom: 30px;
}
.article-content {
    color: #343a40;
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 40px;
}
.btn {
    padding: 12px 30px;
    font-size: 16px;
    border-radius: 5px;
    transition: all 0.3s ease;
}
.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
}
.btn-primary:hover {
    background-color: #0056b3;
    border-color: #0056b3;
}